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公开(公告)号：US20090058341A1
公开(公告)日：2009-03-05
申请号：US11897871
申请日：2007-08-31
Applicant: Haihui Lu , David M. Messersmith , Thomas A. Nondahl
Inventor： Haihui Lu , David M. Messersmith , Thomas A. Nondahl
IPC: H02P23/00
CPC classification number: H02P23/0004
Abstract: Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during a conduction angle of a cycle of an incoming AC power waveform conveyed by the phase path, calculate the conduction angle based on a generally sinusoidal reference value that has a frequency lower than a frequency of the incoming AC power waveform, and adjust the generally sinusoidal reference value based on a value indicative of flux in a load coupled to the phase path.
Abstract translation: 公开了包括具有相位路径的感应电动机控制器的系统，方法和装置; 插在相位路径上的固态开关; 以及耦合到固态开关的控制器。 在某些实施例中，控制器被配置为切换固态开关，使得固态开关在由相位路径传送的输入AC功率波形的周期的导通角期间导通，基于 具有低于输入AC功率波形的频率的频率的大致正弦参考值，并且基于表示耦合到相位路径的负载中的通量的值来调整大致正弦参考值。
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公开(公告)号：US20080067971A1
公开(公告)日：2008-03-20
申请号：US11521018
申请日：2006-09-14
Applicant: Wei Qian , Haihui Lu , Thomas A. Nondahl
Inventor： Wei Qian , Haihui Lu , Thomas A. Nondahl
IPC: H02P3/18
CPC classification number: H02P23/14 , H02P27/16 , Y10S388/917
Abstract: An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between the solid-state switching device and the power input, a current sensor on one of the phase paths, a processor communicatively coupled to the voltage sensor, the current sensor, and the solid state switching device; and a memory coupled to the processor. The processor may be configured to calculate a motor parameter based on a signal from the voltage sensor and a signal from the current sensor and store the calculated motor parameter in memory.
Abstract translation: 一种感应电动机控制器，其可以包括从电力输入到功率输出的三相路径，插在电源输入端和三相路径中的每一个上的功率输出端之间的固态开关装置， 固态开关器件和功率输入之间的相位路径，在一个相位路径上的电流传感器，通信地耦合到电压传感器，电流传感器和固态开关器件的处理器; 以及耦合到处理器的存储器。 处理器可以被配置为基于来自电压传感器的信号和来自电流传感器的信号来计算电动机参数，并将计算的电动机参数存储在存储器中。
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公开(公告)号：US20070268051A1
公开(公告)日：2007-11-22
申请号：US11435651
申请日：2006-05-17
Applicant: Russel J. Kerkman , Qiang Yin , Haihui Lu
Inventor： Russel J. Kerkman , Qiang Yin , Haihui Lu
IPC: H03K3/017
CPC classification number: H02M7/5387 , H02M1/44 , H02M5/458 , H02M2001/123
Abstract: A method and apparatus for reducing common mode noise in a three phase pulse width modulated (PWM) system, the method comprising the steps of receiving the first, second and third modulating waveforms, identifying one of the modulating waveforms that is at least one of instantaneously the maximum and instantaneously the minimum of the modulating waveforms as a first identified waveform, wherein comparison of the first identified waveform to the carrier signal would generate a first on-off pulse sequence associated with a phase corresponding to the first identified waveform, generating switch control signals associated with the phase corresponding to the first identified waveform that cause a modified on-off pulse sequence that is phase shifted from the first pulse sequence, using the second and third modulating waveforms to generate second and third on-off pulse sequences corresponding to the second and third phases and providing the modified pulse sequence and the second and third pulse sequences to the one of the inverter and the converter.
Abstract translation: 一种用于降低三相脉宽调制（PWM）系统中的共模噪声的方法和装置，该方法包括以下步骤：接收第一，第二和第三调制波形，识别至少一个瞬时调制波形之一 最大和瞬时调制波形的最小值作为第一识别波形，其中第一识别波形与载波信号的比较将产生与对应于第一识别波形的相位相关联的第一开 - 关脉冲序列，产生切换控制 使用第二和第三调制波形产生与对应于第一识别波形的相位相关的信号，该第二和第三调制波形产生与第一脉冲序列对应的第二和第三开关脉冲序列， 第二和第三相，并提供修改的脉冲序列和第二和第三脉冲 序列到逆变器和转换器之一。
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公开(公告)号：US09240731B2
公开(公告)日：2016-01-19
申请号：US13845416
申请日：2013-03-18
Applicant: Lixiang Wei , Yuan Xiao , Haihui Lu , Douglas B. Weber
Inventor： Lixiang Wei , Yuan Xiao , Haihui Lu , Douglas B. Weber
CPC classification number: H02M5/458 , H02M7/49 , H02M2001/325
Abstract: Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to connect first and second cell output terminals to selectively bypass a power stage of a multilevel inverter, with an optional AC input switch to selectively disconnect the AC input from the power cell switching circuit during bypass.
Abstract translation: 提出了多电平逆变器，功率单元和旁路方法，其中功率单元开关电路与功率单元输出选择性地断开，并且闭合的旁路连接第一和第二单元输出端子以选择性地旁路多电平逆变器的功率级 具有可选的AC输入开关，用于在旁路期间选择性地断开AC电源与电源开关电路的输入。
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15.发明申请DOUBLE FED INDUCTION GENERATOR CONVERTER AND METHOD FOR SUPPRESSING TRANSIENT IN DEACTIVATION OF CROWBAR CIRCUIT FOR GRID FAULT RIDETHROUGH 有权双FED感应发生器转换器和用于抑制用于故障故障的桥梁电路的瞬时停止的方法公开(公告)号：US20120262129A1
公开(公告)日：2012-10-18
申请号：US13085639
申请日：2011-04-13
Applicant: Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
Inventor： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
IPC: H02P9/10
Abstract: A double fed induction generator (DFIG) system and controller are presented in which the rotor side converter is preloaded with one or more initial values for resuming regulated operation to counteract transients upon deactivation of the crowbar protection circuit to provide grid fault ride through.
Abstract translation: 提出了一种双馈感应发电机（DFIG）系统和控制器，其中转子侧转换器预载有一个或多个初始值，用于恢复调节操作，以在停用撬棒保护电路时抵消瞬变以提供电网故障穿越。
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Patent Agency Ranking
公开(公告)号：US20120223668A1
公开(公告)日：2012-09-06
申请号：US13473985
申请日：2012-05-17
Applicant: Haihui Lu , David M. Messersmith , Thomas A. Nondahl
Inventor： Haihui Lu , David M. Messersmith , Thomas A. Nondahl
IPC: H02P23/14
CPC classification number: H02P23/0004
Abstract: Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during a conduction angle of a cycle of an incoming AC power waveform conveyed by the phase path, calculate the conduction angle based on a generally sinusoidal reference value that has a frequency lower than a frequency of the incoming AC power waveform, and adjust the generally sinusoidal reference value based on a value indicative of flux in a load coupled to the phase path.
Abstract translation: 公开了包括具有相位路径的感应电动机控制器的系统，方法和装置; 插在相位路径上的固态开关; 以及耦合到固态开关的控制器。 在某些实施例中，控制器被配置为切换固态开关，使得固态开关在由相位路径传送的输入AC功率波形的周期的导通角期间导通，基于 具有低于输入AC功率波形的频率的频率的大致正弦参考值，并且基于表示耦合到相位路径的负载中的通量的值来调整大致正弦参考值。
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公开(公告)号：US20080203954A1
公开(公告)日：2008-08-28
申请号：US12039602
申请日：2008-02-28
Applicant: Wei Qian , Haihui Lu , Thomas A. Nondahl
Inventor： Wei Qian , Haihui Lu , Thomas A. Nondahl
CPC classification number: H02P23/14 , H02P27/16 , Y10S388/917
Abstract: An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between the solid-state switching device and the power input, a current sensor on one of the phase paths, a processor communicatively coupled to the voltage sensor, the current sensor, and the solid state switching device; and a memory coupled to the processor. The processor may be configured to calculate a motor parameter based on a signal from the voltage sensor and a signal from the current sensor and store the calculated motor parameter in memory.
Abstract translation: 一种感应电动机控制器，其可以包括从电力输入到功率输出的三相路径，插在电源输入端和三相路径中的每一个上的功率输出端之间的固态开关装置， 固态开关器件和功率输入之间的相位路径，在一个相位路径上的电流传感器，通信地耦合到电压传感器，电流传感器和固态开关器件的处理器; 以及耦合到处理器的存储器。 处理器可以被配置为基于来自电压传感器的信号和来自电流传感器的信号来计算电动机参数，并将计算的电动机参数存储在存储器中。
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公开(公告)号：US07358700B2
公开(公告)日：2008-04-15
申请号：US11521018
申请日：2006-09-14
Applicant: Wei Qian , Haihui Lu , Thomas A. Nondahl
Inventor： Wei Qian , Haihui Lu , Thomas A. Nondahl
IPC: H02P27/16
CPC classification number: H02P23/14 , H02P27/16 , Y10S388/917
Abstract: An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between the solid-state switching device and the power output, a current sensor on one of the phase paths, a processor communicatively coupled to the voltage sensor, the current sensor, and the solid state switching device; and a memory coupled to the processor. The processor may be configured to calculate a motor parameter based on a signal from the voltage sensor and a signal from the current sensor and store the calculated motor parameter in memory.
Abstract translation: 一种感应电动机控制器，其可以包括从电力输入到功率输出的三相路径，插在电源输入端和三相路径中的每一个上的功率输出端之间的固态开关装置， 固态开关器件和功率输出之间的相位路径，一个相位路径上的电流传感器，通信地耦合到电压传感器，电流传感器和固态开关器件的处理器; 以及耦合到处理器的存储器。 处理器可以被配置为基于来自电压传感器的信号和来自电流传感器的信号来计算电动机参数，并将计算的电动机参数存储在存储器中。
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公开(公告)号：US20060192522A1
公开(公告)日：2006-08-31
申请号：US11068323
申请日：2005-02-28
Applicant: Russel Kerkman , Qiang Yin , Haihui Lu
Inventor： Russel Kerkman , Qiang Yin , Haihui Lu
IPC: H02P7/36
CPC classification number: H02M7/48 , H02M1/44 , H02M2001/123
Abstract: Methods and apparatus for reducing the common mode voltage generated by eliminating zero-voltage vectors in a rectifier/inverter variable frequency drive (VFD) system includes comparing three phase voltages to each other to determine a maximum voltage in one phase, a minimum voltage in another phase and a middle voltage in still another phase, inverting phase voltages for one phase having the maximum voltage and another phase having the minimum voltage, comparing the phase voltages to a carrier wave to determine gating signals for three respective phases of the inverter, and inverting gating signals for the one phase having the maximum voltage and for another phase having the minimum voltage to reduce the common mode voltage in the motor. In one embodiment, the zero-voltage vectors are removed by relating a first plurality of gating signals and a plurality of sector logic signals in a logic table to a second plurality of gating signals that are applied to phases of the inverter
Abstract translation: 整流/变频变频驱动（VFD）系统中消除零电压矢量产生的共模电压的方法和装置包括将三相电压相互比较，以确定一相中的最大电压，另一相中的最小电压 相位和另一相的中间电压，将具有最大电压的一相的相位相电压和具有最小电压的另一相相比较，将相电压与载波进行比较，以确定逆变器的三个相位的门控信号，以及反相 具有最大电压的一相的门控信号以及具有最小电压的另一相位以降低电动机中的共模电压。 在一个实施例中，通过将逻辑表中的第一多个选通信号和多个扇区逻辑信号与施加到反相器的相位的第二多个选通信号相关联来消除零电压矢量
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20.发明授权Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough 有权双馈感应发电机（DFIG）转换器和改进电网故障穿通的方法公开(公告)号：US09041234B2
公开(公告)日：2015-05-26
申请号：US13430504
申请日：2012-03-26
Applicant: Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
Inventor： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
CPC classification number: H02P9/006 , F03D7/0224 , F03D7/0284 , F03D7/0288 , F03D7/04 , F03D9/255 , H02H7/06 , H02H7/12 , H02H9/002 , H02J3/386 , H02J2003/001 , H02P9/007 , H02P9/102 , H02P9/48 , H02P2101/15 , Y02E10/723 , Y02E10/763
Abstract: A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault occurrences or grid fault clearances.
Abstract translation: 提出了一种双馈感应发电机（DFIG）转换器方法，其中转子侧电流尖峰响应于电网故障发生或电网故障间隙使用串联阻尼电阻衰减。
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